Erlangen 2018 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 51: Poster: Quantum Optics and Photonics IV

Q 51.69: Poster

Mittwoch, 7. März 2018, 16:15–18:15, Redoutensaal

Towards amorphous superconducting single-photon detectors integrated with nanophotonic waveguides — •Matthias Häußler1,2, Martin A. Wolff1,2, Wolfram H. P. Pernice1,2, and Carsten Schuck1,21University of Münster, Physics Institute, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany — 2CeNTech - Center for NanoTechnology, Heisenbergstr. 11, 48149 Münster, Germany

Future applications in photonics and quantum communication strongly depend on the development of suitable single-photon detectors. Superconducting nanowire single-photon detectors (SNSPDs) are among the most promising candidates offering high efficiency and bandwith at low noise and jitter.

Superconducting nanowires made from nanocrystalline superconducting materials such as NbN feature excellent electrical performance when grown on suitable substrates. Recently similar performance in terms of single-photon detection has also been achieved with amorphous superconducting films, which adapt to a wider range of substrates.

Here we aim for realizing SNSPDs made from amorphous molybdenum silicide (MoSi) superconducting films on dielectric material systems that are well suited for the fabrication of photonic integrated circuits. We present a cryogenic measurement system for testing the single-photon detection capabilities of MoSi thin films. Waveguide integrated SNSPDs are prototyped using standard nano-fabrication routines and performance tests are presented.

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